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Remote port mirroring includes Layer 2 and Layer 3 remote port mirroring.
•
Layer 2 remote port mirroring
—The mirroring sources and the mirroring destination are
located on different devices on a same Layer 2 network.
Layer 2 remote port mirroring can be implemented when a reflector port or an egress port is
available on the source device. The method to use the reflector port and the method to use the
egress port are called reflector port method and egress port method, respectively.
Reflector port method
—Packets are mirrored as follows:
−
The source device copies packets received on the mirroring sources to the reflector
port.
−
The reflector port broadcasts the mirrored packets in the remote probe VLAN.
−
The intermediate devices transmit the mirrored packets to the destination device
through the remote probe VLAN.
−
Upon receiving the mirrored packets, the destination device determines whether the ID
of the mirrored packets is the same as the remote probe VLAN ID. If the two VLAN IDs
are the same, the destination device forwards the mirrored packets to the data
monitoring device through the monitor port.
A reflector port can be fixed or configurable. The switch supports only the configurable
reflector port.
Figure 61 Layer 2 remote port mirroring implementation through the reflector port
method
Egress port method
—Packets are mirrored as follows:
−
The source device copies packets received on the mirroring sources to the egress port.
−
The egress port forwards the mirrored packets to the intermediate devices.
−
The intermediate devices flood the mirrored packets in the remote probe VLAN and
transmit the mirrored packets to the destination device.
−
Upon receiving the mirrored packets, the destination device determines whether the ID
of the mirrored packets is the same as the remote probe VLAN ID. If the two VLAN IDs
are the same, the destination device forwards the mirrored packets to the data
monitoring device through the monitor port.
Source
device
Intermediate
device
Destination
device
GE1/0/1
Remote
probe VLAN
Data monitoring
device
Host
Remote
probe VLAN
Mirroring process in the device
Source port
Monitor port
Original packets
Reflector port
GE1/0/3
GE1/0/2
GE1/0/1
GE1/0/2
GE1/0/1
GE1/0/2
GE1/0/1
GE1/0/3
GE1/0/2
Common port
Mirrored packets
Summary of Contents for FlexNetwork 10500 SERIES
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